Week 5 Lesson 1
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Transcript of Week 5 Lesson 1
![Page 1: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/1.jpg)
Unit 3 Parallel, Intersecting and Perpendicular lines
![Page 2: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/2.jpg)
Parallel, Intersecting and
Perpendicular lines• Line CD is parallel to line AB.
A B
C D
• Lines that never cross are called parallel lines.
![Page 3: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/3.jpg)
Parallel, Intersecting and
Perpendicular lines• Line EF intersects line AB at point K.
F
A B
K
E
• Intersecting lines are two or more lines that meet at a common point.
![Page 4: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/4.jpg)
Parallel, Intersecting and
Perpendicular lines• Line GH is perpendicular to line AB.
G
A B
E
• Perpendicular lines are lines that intersect each other at right angles.
![Page 5: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/5.jpg)
Lets see if you can tell the difference between parallel, intersecting and
perpendicular….
Parallel
![Page 6: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/6.jpg)
Lets see if you can tell the difference between parallel, intersecting and
perpendicular….
intersecting
![Page 7: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/7.jpg)
Lets see if you can tell the difference between parallel, intersecting and
perpendicular….
Perpendicular
![Page 8: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/8.jpg)
How about this one
Parallel, Intersecting and Perpendicular
![Page 9: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/9.jpg)
So how do we draw perpendicular lines?
• Method 1
• Place a set square on line AB with the right angle touching the line.
A B
![Page 10: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/10.jpg)
So how do we draw perpendicular lines?
• Then draw along the side of the set square that is at right angles to line AB.
A B
![Page 11: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/11.jpg)
Drawing perpendicular lines
• Use your set square to draw lines that are perpendicular to the following lines:
• 1.
![Page 12: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/12.jpg)
Drawing perpendicular lines
• Use your set square to draw lines that are perpendicular to the following lines:
• 2.
![Page 13: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/13.jpg)
Drawing perpendicular lines
• Use your set square to draw lines that are perpendicular to the following lines:
• 3.
![Page 14: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/14.jpg)
Drawing perpendicular lines
• Use your set square to draw lines that are perpendicular to the following lines:
• 4.
![Page 15: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/15.jpg)
What if you don’t have a set square?
• Method 2: Draw a dot (X) on the middle of line AB.
• Place the center of the protractor on the dot
A B
X
![Page 16: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/16.jpg)
What if you don’t have a set square?
• Now draw another dot (Y) at the 90° mark on the protractor.
Y
A B
X
![Page 17: Week 5 Lesson 1](https://reader033.fdocuments.us/reader033/viewer/2022042715/559614751a28abd8518b471f/html5/thumbnails/17.jpg)
What if you don’t have a set square?
• Draw a line to connect X and Y. Line XY is Perpendicular to line AB.
Y
A B
X